<div class="container">
  <h1>get_default_date_format()</h1>
  <p class="signature"> function get_default_date_format(): void </p>
  <h2>Description</h2>
  <div class="description">
    <p>Initializes the default date format constant if not already defined.</p>
    <p>If DEFAULT_DATE_FORMAT is not defined, sets it to 'mm/dd/yyyy' (US date format).</p>
  </div>
  <h2>Parameters</h2>
  <p>This function does not accept any parameters.</p>
  <h2>Return Value</h2>
  <p>This function does not return a value.</p>
  <h2>Example Usage</h2>
  <div class="example">
    <pre>
get_default_date_format();
// No output, just initializes the DEFAULT_DATE_FORMAT constant if not already defined.</pre>
  </div>
</div>
